Suspensory device for electric lamps.



110,832,951 PATENTEDOOT. 9, 1906 s'. R. BELL. SUSPENSORY DEVICE FOR ELEGTRIG LAMPS.

- APPLICATION FILED SEPT. 19, 1905- .JJA

WI TNESSES. W VEN 70f? unrriln rnrnnr oration."

SAM EL ROBE RT BELL; or 'rUs'cALoosA, ALABAMA.

no. seaesi.

, Specification of Letters Patent.

Application file September 19 1905 Serial No. 279.979.

1 m susn=rfl-ason!.nsvlo s'fFoe ELEcTmc LAMP Patented. 9, 1906.,

To all w/wnt it may concern.-

Be it known that I, SAMUEL ROBERT B i 11L,

a citizen of the United States, and aresident of Tuscaloosa, in the county of Tuscaloosa and State of Alabama, havelnvented anew and Improved Suspens'ory Device for Electric Lamps, of which the (following is a full, clear, and exact description.

, fThis invention relates to suspensory (lefro vices for electric lamps; and it consists, substantially, in the details of construction and combinations of parts hereinafter more,par-- ti'cnlarly described, arid pointed out in the claims.

' One of'the principal objeizts ofthe inveri v tion is to provide a suspensory device for 1 electric lanhps of an embodiment to overcome numerous isadvantages objections encounteredin the use of many other CORT/IT, times of the kind hitherto devised.

' A furtherichject is to provide a device of this character which is simple in construction. andcomparatively inexpensive to manufacture, besides being thoroughly effective and reliable in use and possessing the capacity for long and repeated service.

The above and additional objects are attained by means substantially such as are illustrated in the accompanying drawings, in Which-s Figure 1 is a vertical sectional view of a, suspensory device for electric lamps embodyin my improvements.

- si e view. Fig. 3 is a top plan View, and Fig.

Fig. 2 is a sectional a is an enlarged sectional plan view in detail;

' Before proceeding with a more detailed description it may be stated that in theform oi my improvements herein shown I employ a -uspensory device for electric lamps com-- LE a specially-constructed s ring-conl e drum about or around whic is wound duplex flexible conductor'for both supan electric lamp and supplying eleccurrent thereto, specially-constructed electrical comiections being employed becise detail, sinceirnrnaterial changes therein may be made coming within the scope of my invention.

Reference being had to the drawings by,

the-designating characters thereon, 1 reps sents tl. base of a rosette of insulatin material, having holes 2 therein for or 'nary wooden screws (not shown) for securing the same to a ceiling or other support and also having holes 8 therein for the ordinary inside wiring, (not shownJa cup 4 of insulating ma terial being removably attached to'said base in any suitable Way and containing fuses,

one of which is indicated at 5, in electrica connection with a strip 6 of cond'uctin material within the cup and one of-dup licate sets of op ositely-dis osed spring-clips 7 and 8, secured to the un er siile of t e base 1 by means of screws 9, (see Fig. 2,) said connection being had through the intermediary of the usual late a, secured in place by screw 1). Said uplicate sets of clips areior holding in electrical contact therewith baredpon I tions of the usual service-wires for supplying electric current to the lamp (not shown) to be supported by Indy improved'device, it be. ing here mentions that the said base 1- has pendent from opposite sides thereof parallel,

angers 10 of insulatin material, theinner sides of which are .pre erably' formed with, vertical grooves 11. (See Fig. 1.) The and;

hangersare formed atsornear their lower ends with openings, inlwhicli are seatcd'iin'etalli'c' bushings, 1'2, having correspontlin horizontally-disposed openings therethrclng in which are rotatably received metallic journals 13, partially extending into and'pro'ecting from the endsofspreferably a solid rum i 14 of non-conductnig material--as wood, for" instance+each end of said .drum and a por tion of the periphery thereof from each on bein recessed to receive an angular metallic .mem er 15, one branch of whichr isin electrical contaclfwith the journal 13 conti o'us thereto and the other branch of which ispro vided with a screw 16 for securing inelectrical contact therewith one'oithe terrnimzlsv 17 of one of the wires of a flexible duplex electrical conductor 18, which is would about the drum 14 and to the free endic'f which may be electrically attached the electric lamp in a manner well known. The said drum is preferably providedwith flanges 19 at itsends to insure the retention ofthe 1 -windings of the ,.flexiblc duplex conductor thereon, and it will be noted that each singer.

ing 12 has in electrical contsct therewith the lower terminal of one of two electrical conductorsZO, the upper terminal of which isin similar connection with the corresponding conducting-strip 6 within the fuse-cup, sci

conductors extending into. the fuse-cup through the usual opening 21 therein and portions thereof being housed in the grooves 11 in the hangers. i 4 l The outer end oi one of the journals 13 for the drum 1% is provided with a pinion '22, the teeth of which areen 'wged by the teeth of s gear-wheel 23, carried by a spindle 24, rots.- tahly mounted on the adjacent or corresponding hanger and to which is fastened in any suitable way the inner end of a, coiled spring 25, having its outer end secured to 2. or, stud 26, projecting from the said It will thus be seen that Whenever the flexible duplex conductor 18 may be drawn upon to lower the lamp, for instance, the drum will revolve and the spring will he partially Wound or placed under tension, thereby inumrtiru thereto a tendency to sgsin wind up said conductor by causing the drum to revolve in the -'revcrse direction through the intermediccy of said pinion and gecr wheel.

Practically the entire structure above described is inclosed by a casing 27 of non-conductin materiel, secured in place in any suitab e Way-as, for instance, by means of screws 28, (shown in Fl 3,} but which arereferably omitted from rigs. 1 and 2. The bottom or lower part of said casing is formed with c centrally-disposed openin surrounded interiorly of the casin by a threaded collar 29, in which is screws the threaded stem 3% of s plug 31, of rubber or other suitable insulating material, hsving a cl-shaped opening 32 formed vertically in the ssme, through which the said. flexible duplex conductor extends, as shown. For the purposeolv securing or fastening this'eonductor-in the differ ent positions'to which it may be drawn, so as to prevent the same from being rewoun'd upon the drum through the power of the spring 25,1 remove a radial section from the said plug leaving a slot therein, between the sides of which is held a pin 33., on which is loosely held the upper and oi s dog 34%, against which constantly presses the tree portion of a spring 35, secured et 36 to the inner side of the casing alongside the said.

threaded collar 29. L rem this nstruction it is apparent that the duplex conductor 18 may be drawn outto any length desired by simply carrying the some slightly to one side, thus to overcome the pressure of the spring a ainst the dog, and then by releasing the con u'ctor the dog will again be carried against the portion thereof within the said ti-shaped opening 32, which portion will be confined or wedged in said opening in a manner and. for the purpose explained.

saaesi Having thus described my invention, 1 claim as new and desire to secure by Letters Pstent 1. A suspensory device for an electric lamp, comprising a base of insulating material, a

cup of insulating material applied thereto,

having fuses therein, hangers of insulating material from the base, provided with metallic bushings, a spring-controlled drum of insulating material, having metallic journals rotatably supported by said bushings, a flexible duplex conductor Winding upon the drum, duplicate conductors from the cup, in electrical connection with the fuses and said bushings, and electrical connections between the inner terminals of the wires of said duplex conductor and said journals.

2. A suspensory device for an electric lamp,

comprising a base of insulating-materiel, e

cup of insulating material applied thereto, hsvim fuses therein, hangers of insulating material from the base, provided with metallic bushings, a. spring-controlled drum of insulating material, having metallic journals i'otstably supported by said bushings, a flexi trolled drum of insulating material havin metallic journals rotatably received in sai bushings, a flexible duplexv conductor Winding upon the drum, angular conducting members seated in the material of the drum each having one of the arms thereof in contact with one of said journals and having the other arm thereof contact with one ofthe inner terminals of the Wires of the duplex conductor, and duplicate conductors leading from the cup and electrically connecting said fuses and said bushings.

4. A suspensory dB'VIOG for an electric lamp, comprising 18'. base of insulating materiahs cup of insulating material applied thereto and having fuses therein, hangers of insulating material connected with the base and provided with metallic bushings, a spring-controlled drum of insulating material 11mm metallic journals rotst'ably received in ssid bushings, a flexible duplex conductor winding upon the drum, angular conducting memthereof in contact with the inner terminal of nected with the base' an'd provided with me tallie bushin' s, a-druni having metallic journals rotatali y su ported by said bushings,

I5 one of said journa s carrying apinion, a flexible duplex conductor winding upon the drum, angular conducting members'embedded in the drum and having one of the arms thereof in contact with said journals, andthe other arm thereof in oontactg with the inner terminals of one of the wires of the duplex conductor, duplicate conductorsfrom the cup and in electrical connection with the fuses and said bushings, and a spring-controlled 25 gear-wheel in enga eihent with said pinion. 6. A suspensory eviee for electric lamps having fusescom rising a spring-controlled drum, a flexi- 'ble uplex conductor windin thereon, an inclosing casing for the device, aving an open- I ing in the lower part thereof, a plug fitting 0 in said opening, having an o ening therethrough, to ether with a radiaFslot ooinmu nicating Wit the second-named opening, and

a spiin'gpressed dog supported in said slot.

7. A suspensory device for electric lamps, 3 5

com rising a spring-controlled drum, afle ble uplex conductor windin thereon, an inclosing casing for the device, avin an opening in the lower art thereof, a p ug fitting in said opening, having an o ening there- 40 through, together with'a radiaFslot communicating with the second-named'o enin ,and

a spring-pressed dog supported 1n sai slot, sai second-named opemn being V-shaped.

In testimony whereof have signed my '45 name to this specification in the presence of: two subscribing witnesses. i a

SAMUEL ROBERT BELL; Witnesses: I

W. N. LnNerFoRD, W. R. MED I 

